Small guide pipe grouting construction method for treating water gushing of inclined shaft of tunnel

Abstract

The invention relates to the technical field of tunnel construction, in particular to a small guide pipe grouting construction method for treating water gushing of an inclined shaft of a tunnel. The small guide pipe grouting construction method comprises the following steps of S1, manufacturing a pipe and calibrating a hole site; S2, cleaning a hole; S3, welding a pipe head; S4, sealing a pipe opening; S5, constructing a grout stopping wall; S6, carrying out test running of the grouting pipe; S7, slurrying, specifically carrying out trial preparation on water glass of different water cement ratios, different cement varieties, different manufacturers, different water glass concentrations and different temperature conditions in advance in a laboratory, and preferably selecting a mix proportion meeting different water inflow sizes and fault fracture zone degrees; S8, determining the grouting sequence, specifically, firstly, grouting two haunches of a water area, then grouting a water-free area, and then grouting an arch crown; S9, controlling the grouting amount and adjusting the grout proportion; S10, controlling the grouting pressure; and S11, finishing grouting. According to the construction method, the effects of preventing mud and sand from gushing during excavation and ensuring the stability of surrounding rock are achieved, and construction is carried out smoothly; and the construction method is mainly applied to the aspect of tunnel water gushing grouting treatment.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, and more specifically, to a small conduit grouting method for controlling water gushing in inclined shafts of tunnels. Background technique [0002] Tunnel construction is affected by various unfavorable geological disasters, among which water inrush and gushing are frequent problems in tunnel construction in water-rich areas. Water gushing in the tunnel not only affects the construction progress, but also easily leads to a drop in the groundwater level and a shortage of water resources. If the protruding water contains soil, it may induce piping disasters, cause the surrounding rock of the tunnel to be hollowed out, and even cause disasters such as surface collapse. Existing construction methods are difficult to prevent water inrush. Contents of the invention [0003] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a small con...

AI Technical Summary

Problems solved by technology

Water gushing in the tunnel not only affects the construction progress, but also easily leads to a drop in the groundwater level and a shortage of water resources. If the protruding water contains soil, it may induce piping disasters, cause the surrounding rock of the tunnel to be hollowed out, and even cause disasters such as surface collapse.

Existing construction methods are difficult to prevent water inrush

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